521641755312484 has 27 divisors (see below), whose sum is σ = 913415294497881. Its totient is φ = 260666048834880.

The previous prime is 521641755312467. The next prime is 521641755312499. The reversal of 521641755312484 is 484213557146125.

The square root of 521641755312484 is 22839478.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 334225046884 + 521307530265600 = 578122^2 + 22832160^2 .

It is a super-2 number, since 2×521641755312484² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 142564019847 + ... + 142564023505.

Almost surely, 2^{521641755312484} is an apocalyptic number.

521641755312484 is the 22839478-th square number.

It is an amenable number.

521641755312484 is a deficient number, since it is larger than the sum of its proper divisors (391773539185397).

521641755312484 is an frugal number, since it uses more digits than its factorization.

521641755312484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13564 (or 6782 counting only the distinct ones).

The product of its digits is 32256000, while the sum is 58.

The spelling of 521641755312484 in words is "five hundred twenty-one trillion, six hundred forty-one billion, seven hundred fifty-five million, three hundred twelve thousand, four hundred eighty-four".